In all cases, intent to kill or harm is irrelevant. In criminal law, the attempted battery type of assault requires a Specific Intent to commit battery. An intent to frighten will not suffice for this form of assault. There can be no assault if the act does not produce a true apprehension of harm in the victim. There must be a reasonable fear of injury.
Cholinergic receptors are found throughout the nervous system. Acetylcholine molecules bind themselves to the receptor molecules on the cells of the receptors. Cholinergenic receptors are sensitive to nicotine. Nicotine stimulates the part of the autonomic system that reacts to stress factors. Cholinergic receptors control certain responses that occur in the prostate.
Parasympathetic. All cholinergic, meaning, their ligand is acetylcholine. Divided into two, nicotinic and muscarinic. What's important here is that the muscarinic ones are sensitive to atropine as an antagonist (one will usually not try to block nicotinic receptors).